US918042A - Stove. - Google Patents

Description

E. "13. HAMMOND.

sTovE. y APPLIOATIONIILED APB. 24, 1-908.

E. B. HAMMOND.

STOVE.

APPLIOATIQB FILED APB. 24, 190s.

` Patented Apr. 13', 1909. z slums-SHEET z.

EDGAR B. HAMMOND, or NEW BEDFORD, MASSAOHUSETTS.

sTovE.

Specification of Letters Patent.

Patented April 13, 1 909.

Application filed April 24, 1908. Serial No. 429,058.

To all whom it may concern:

Be it known that I, EDGAR B. HAMMOND, a citizen of the United States, and residing at N ew Bedford, Massachusetts, have invented certain new and useful `Improvements in Stoves, of which the following is a specification.

My invention relates to cook stoves, and consists in such a construction and arrangement of the oven, outer casing, flue and inlet and discharge openings as adapts the stove for use with burners supplied with liquid or gaseous fuel, as fully Set forth hereinafter and as illustrated in the accompanying drawing, in which:

Figure l is a perspective view of a cook stove embodying my improvement; Fig. 2 is a longitudinalsection; Fig. 3 an enlarged section showing the burner and its arrangement in respect to the flue; Fig. l a plan of the burner, the flame spreader removed.

The stove is provided with an oven A, and with a surrounding casing B, of such a size as will form an intervening flue ao, which may extend laround the oven, or inclose it to any desired degree, but which, as shown, extends above the oven, downward at the back, and below the same, and upward at the front to a discharge outlet y. Preferably the oven iS reduced in height at one end so as to form, with the Outer casing at one corner near the top, an enlargement of the flue constituting in effect a vchamber X, ,within which is arranged a suitable vapor burner B", and below this burner is a duet l, communicating with an air inlet opening 'e in the front of the casing above the opening y, and also communicating' with an air supply channel w of the burner B, said duct being formed by a partition l5 having perforations u, and by a part or extension of the oven extending below the chamber X, the bottom of the duct closing the end ,of the flue As thus arranged the air admitted to the duct l passes to the channel zo of the burner and through the latter to one end of the flue, and the products of combustion pass through the flue about t-he oven and from the discharge opening g/ which is in such proximity to the inlet opening 'u and the duct l that t-he air passing to the burner is preliminarily heated.

An increased heating effect is secured by providing a discharge pipe C, to communicate with the discharge opening y, said pipe extending across the front of the stove and being adapted to communicate at one end with any suitable chimney or flue. By this means an extended heating surface is secured adjacent to the inlet opening o, which insures a greater heat-ing of the air passing' to the burner.

The oven will be provided with suitable doors and the casing may, as shown, be adapted to rest directly upon the hearth, but, if desired, may be provided with legs for elevating it, and the top plate 2 has suitable openings e, to which may be fitted the usual lids, one of the said Openings-being above the burner B so that a vessel placed in or above said opening may be heated directly by the flame from the burner. The burner B may be of any suitable character, but, as shown, is of a form devised for the use of alcohol, or other liquid fuel, and having the air inlet channel to centrally arranged and surrounded by an annular retort with a combustion chamber having Outlet openings s', and communicating with a supply pipe D, and preferably there is a surrounding shield 3, the openings u, in the top of the plate l5 of the duct being within said shield, the latter also constituting channels for the passage of air to the flame resulting from the burning gas issuing from the vaporizing chainber. Preferably also the burner is provided with a flame spreader (i, which is preferably adjustable vertically, this adjustment being eected in any suitable manner, as, for instance, by mounting the spreader upon a bolt 2O supported Lon the bottom of the duct and by a cross-pin 2 1.

in order to prevent overflow of oil. and to aid in starting the apparatus it is desirable to have a cup for containing a limited amount of liquid fuel which when ignited soon heats the retort So that the Yliquid fuel supplied thereto vaporined. shown this cup is .formed by means of a flange 8, upon the bottom plate 9 of the burner. 'The burner, being arranged beneath the opening e, in the top plate, and the flame spreader being arranged above the burner, insures the proper combination of air and combustible vapor to heat the vessels placed above said opening, while insuring also such a combustion that there is no deposit of carbon upon the bottom of the vessel, the flame spreader further preventing the iame being projected directly upward from the opening in the top plate.

I have referred to the inlet and discharge openings as being in the front of the stove and use the term front merely as indicating that side of the stove in proximity to the burner, whether this side be the narrower or the wider portion of the casing.

Thile the stove casing may be of ordinary cast or sheet metal, I prefer to make the walls and bottom in a manner to prevent as much as possible the loss of heat. Thus said parts, as shown, may be double having inner walls l0 and outer walls l2 with an inner space which may be fitted with a layer 13 of asbestos, mineral fiber or other non-conducting material.

`Without limiting myself to the construction and arrangement shown, I claim:

l. The combination lin a cook stove of an outer casing having an inlet opening and an outlet opening at one side, an oven within the casing arranged. to form a surrounding iue. communicating with both openings and a chamber X above the inlet opening, a perforated partition above the inlet opening, and an oil burner above the said partition.

2. The combination in a cook stove of a casing having at one side an inlet opening and an outlet opening below the inlet opening, an oven arranged in the casing to form a chamber .X above the inlet opening and a surrounding flue communicating at its end with the outlet opening, a perforated partition arrange-d above a part of the oven and above Jthe inlet opening to forni an inlet duct, and an oil burner provided with a vaporizing chamber and with a central air channel communicating with said duct.

3. The combination in a cook stove of a casing having at one side an inlet opening and an outlet opening below the inlet opening, an oven arranged in the casing to form a chamber X above the inlet opening and a surrounding iiue communicating at its end with the outlet opening, a perforated partition arranged above a part oi' the oven and above the inlet opening to form an inlet duct, an oil burner provided with a vaporizing chamber and with a central air channel communicating with said duct, and a discharge pipe communicating with the outlet opening.

4. The combination with the oven of a cook stove, of a lsurrounding casing arranged to form an intervening flue, and provided with an outlet for the flue at one side of the stove, an air inlet chiot arranged above said outlet to close the end of the flue, a vapor burner above said duct having an air supply channel coinmunciating with the duct, and provided with a vaporizing chamber and a supply pipe therefor.

5. The combination with the oven of a cook stove, of Va surrounding casing arranged to form an intervening flue, and provided with an outlet for the flue at one side of the stove, an air inlet duct above said outlet, a vapor burner above said duct having an air supply channel communicating' with the duct, and a vaporizing chamber and supply pipe therefor. Y

6. The combination with the oven of a cook stove, of a surrounding casing arranged to form an intervening' flue, and provided with an outlet for the flue at one side of the stove, an air inlet duct above said outlet to close the end of the flue, a vapor burner above said duct having an air supply channel communicating with the duct, a vaperizing chamber and supply therefor,

and an adjustable flame spreader.

7. A cook stove having an oven and surrounding casing constructed to form an intervening iiue and a chamber at one cerner above the oven, a shallow transverse air duct below said chamber, a vapor burner in said chamber with an air supply channel communicating with the duct and with the flue, and a discharge outlet communicating with the flue in the casing below the inlet.r

8. The combination of a casing, an oven arranged therein to forni an intermediate iue, said casing provided with an inlet air duct and with a discharge opening below :said duct, and a vapor burner having a surrounding shield, and openings in the top plate of the duct inside said shield.

9. The combination in a cook stove of an outer casing, an inner oven arranged to form with the casing an intermediate flue and a chamber X, and an oil burner arranged within said casing, the casing having inner and outer walls and an intervening nonconducting material.

ln testimony whereof I aiiix my signature in presence of two witnesses.

EDGAR B. HAMMOND. lVitnesses:

WVM.. H. HAND, Jr., ROBERT A. TERRY.

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